Question / Help x264 vs AMD vs Intel
- Thread starter Manfrex
- Start date
Ok thank you so much! Can you help me adjust the settings? =P I recorded a few minutes and I got I bad quality, the video was pixelated.
http://imgur.com/dyoAnql
http://imgur.com/dyoAnql
WilliamBarrows
Member
I don't think using the AMD encoder will significantly impact your performance at all. Although I've only ever used NVENC so it might be different.
Now, if you want to just record locally you want to use CRF based rate control (no idea how Quick Sync calls it). Basically, if you use that the bitrate setting becomes the MAXIMUM bitrate, so you set it to something really high like 10000, then set the CRF (constant rate factor, meaning the desired quality) to some value around 20. Once again, I'm not sure how much control Quick Sync gives you over the rate factor.
Now, if you want to just record locally you want to use CRF based rate control (no idea how Quick Sync calls it). Basically, if you use that the bitrate setting becomes the MAXIMUM bitrate, so you set it to something really high like 10000, then set the CRF (constant rate factor, meaning the desired quality) to some value around 20. Once again, I'm not sure how much control Quick Sync gives you over the rate factor.
Did you already see this site? https://support.google.com/youtube/answer/1722171?hl=en
Youtube recommended bitrate for 1080p 60fps is 12k. So, if I record using 12k constant bitrate, will it be enough? I mean, I can record using 50k bitrate, but youtube is going to reduce this value to 12k, right?
Youtube recommended bitrate for 1080p 60fps is 12k. So, if I record using 12k constant bitrate, will it be enough? I mean, I can record using 50k bitrate, but youtube is going to reduce this value to 12k, right?
i've done many experiments and the best bitrate for quick sync and maximum quality at youtube is 25000 for 1080p60.
Thank you so much! I'll try those settings. Btw, do you know if intel quick sync quality is better or worst than x264? And for quick sync, you use CBR or VBR ?
Harold
Active Member
x264 will pretty much always have the best quality per bitrate out of ALL the encoders out there.
Including the encoder that sony vegas and adobe premiere use for h264 encoding, mainconcept.
The reason that the GPU encoders like AMD VCE, Intel QuickSync and Nvidia NVENC are recommended for recording is that when you're recording you have the resources available to throw enough bitrate at the problem to offset the quality difference.
For recording, you pretty much always use VBR, as that will optimize the filesize within the bitrate limits you've set.
With x264, you use the CRF-based bitrate selection to simply set a quality target (values in the 15-18 range are almost indistinguishable from lossless) instead of a peak bitrate value. This also allows your bitrate to scale properly from one resolution to the next without having to re-do the settings every time you change.
With other encoders, you simply use VBR and set the bitrate sufficiently above where the upper limit is likely to be to not be a problem for encoding and you'll be fine.
Including the encoder that sony vegas and adobe premiere use for h264 encoding, mainconcept.
The reason that the GPU encoders like AMD VCE, Intel QuickSync and Nvidia NVENC are recommended for recording is that when you're recording you have the resources available to throw enough bitrate at the problem to offset the quality difference.
For recording, you pretty much always use VBR, as that will optimize the filesize within the bitrate limits you've set.
With x264, you use the CRF-based bitrate selection to simply set a quality target (values in the 15-18 range are almost indistinguishable from lossless) instead of a peak bitrate value. This also allows your bitrate to scale properly from one resolution to the next without having to re-do the settings every time you change.
With other encoders, you simply use VBR and set the bitrate sufficiently above where the upper limit is likely to be to not be a problem for encoding and you'll be fine.